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PBB Protein ERP29 image.jpg
Available structures
PDBOrtholog search: PDBe RCSB
AliasesERP29, C12orf8, ERp28, ERp31, HEL-S-107, PDI-DB, PDIA9, endoplasmic reticulum protein 29
External IDsMGI: 1914647 HomoloGene: 4963 GeneCards: ERP29
Gene location (Human)
Chromosome 12 (human)
Chr.Chromosome 12 (human)[1]
Chromosome 12 (human)
Genomic location for ERP29
Genomic location for ERP29
Band12q24.13Start112,013,316 bp[1]
End112,023,451 bp[1]
RNA expression pattern
PBB GE ERP29 201216 at fs.png
More reference expression data
RefSeq (mRNA)



RefSeq (protein)



Location (UCSC)Chr 12: 112.01 – 112.02 MbChr 5: 121.43 – 121.45 Mb
PubMed search[3][4]
View/Edit HumanView/Edit Mouse

Endoplasmic reticulum protein 29 (ERp29) is a chaperone protein that in humans is encoded by the ERP29 gene.[5]


ERp29 is a reticuloplasmin, a protein which resides in the lumen of the endoplasmic reticulum (ER). The protein shows sequence similarity to the protein disulfide-isomerase family.[6] However, it lacks the thioredoxin motif characteristic of this family, suggesting that this protein does not function as a disulfide isomerase.[6] The protein dimerizes and is thought to play a role in the processing of secretory proteins within the ER. Alternative splicing results in multiple transcript variants encoding different isoforms.[5]


Further reading[edit]

  • Hubbard MJ (Sep 2002). "Functional proteomics: The goalposts are moving". Proteomics. 2 (9): 1069–78. doi:10.1002/1615-9861(200209)2:9<1069::AID-PROT1069>3.0.CO;2-R. PMID 12362325. 
  • Mkrtchian S, Sandalova T (2006). "ERp29, an unusual redox-inactive member of the thioredoxin family". Antioxidants & Redox Signaling. 8 (3–4): 325–37. doi:10.1089/ars.2006.8.325. PMID 16677078. 
  • Hochstrasser DF, Frutiger S, Paquet N, Bairoch A, Ravier F, Pasquali C, Sanchez JC, Tissot JD, Bjellqvist B, Vargas R (Dec 1992). "Human liver protein map: a reference database established by microsequencing and gel comparison". Electrophoresis. 13 (12): 992–1001. doi:10.1002/elps.11501301201. PMID 1286669. 
  • Hughes GJ, Frutiger S, Paquet N, Pasquali C, Sanchez JC, Tissot JD, Bairoch A, Appel RD, Hochstrasser DF (Nov 1993). "Human liver protein map: update 1993". Electrophoresis. 14 (11): 1216–22. doi:10.1002/elps.11501401181. PMID 8313870. 
  • Mkrtchian S, Fang C, Hellman U, Ingelman-Sundberg M (Jan 1998). "A stress-inducible rat liver endoplasmic reticulum protein, ERp29". European Journal of Biochemistry / FEBS. 251 (1–2): 304–13. doi:10.1046/j.1432-1327.1998.2510304.x. PMID 9492298. 
  • Ferrari DM, Nguyen Van P, Kratzin HD, Söling HD (Aug 1998). "ERp28, a human endoplasmic-reticulum-lumenal protein, is a member of the protein disulfide isomerase family but lacks a CXXC thioredoxin-box motif". European Journal of Biochemistry / FEBS. 255 (3): 570–9. doi:10.1046/j.1432-1327.1998.2550570.x. PMID 9738895. 
  • Hubbard MJ, McHugh NJ (Nov 2000). "Human ERp29: isolation, primary structural characterisation and two-dimensional gel mapping". Electrophoresis. 21 (17): 3785–96. doi:10.1002/1522-2683(200011)21:17<3785::AID-ELPS3785>3.0.CO;2-2. PMID 11271497. 
  • Shnyder SD, Hubbard MJ (Apr 2002). "ERp29 is a ubiquitous resident of the endoplasmic reticulum with a distinct role in secretory protein production". The Journal of Histochemistry and Cytochemistry. 50 (4): 557–66. doi:10.1177/002215540205000413. PMID 11897809. 
  • Sargsyan E, Baryshev M, Backlund M, Sharipo A, Mkrtchian S (Feb 2002). "Genomic organization and promoter characterization of the gene encoding a putative endoplasmic reticulum chaperone, ERp29". Gene. 285 (1–2): 127–39. doi:10.1016/S0378-1119(02)00417-1. PMID 12039039. 
  • Basrur V, Yang F, Kushimoto T, Higashimoto Y, Yasumoto K, Valencia J, Muller J, Vieira WD, Watabe H, Shabanowitz J, Hearing VJ, Hunt DF, Appella E (2003). "Proteomic analysis of early melanosomes: identification of novel melanosomal proteins". Journal of Proteome Research. 2 (1): 69–79. doi:10.1021/pr025562r. PMID 12643545. 
  • Lim J, Hao T, Shaw C, Patel AJ, Szabó G, Rual JF, Fisk CJ, Li N, Smolyar A, Hill DE, Barabási AL, Vidal M, Zoghbi HY (May 2006). "A protein-protein interaction network for human inherited ataxias and disorders of Purkinje cell degeneration". Cell. 125 (4): 801–14. doi:10.1016/j.cell.2006.03.032. PMID 16713569. 
  • Cheretis C, Dietrich F, Chatzistamou I, Politi K, Angelidou E, Kiaris H, Mkrtchian S, Koutselini H (Oct 2006). "Expression of ERp29, an endoplasmic reticulum secretion factor in basal-cell carcinoma". The American Journal of Dermatopathology. 28 (5): 410–2. doi:10.1097/ PMID 17012915. 
  • Zheng J, Liu X, Yan X, Dai L, Ji C (2006). "Purification and structural characterization of human ERp29". Protein and Peptide Letters. 13 (8): 753–9. doi:10.2174/092986606777841190. PMID 17073718. 
  • Chi A, Valencia JC, Hu ZZ, Watabe H, Yamaguchi H, Mangini NJ, Huang H, Canfield VA, Cheng KC, Yang F, Abe R, Yamagishi S, Shabanowitz J, Hearing VJ, Wu C, Appella E, Hunt DF (Nov 2006). "Proteomic and bioinformatic characterization of the biogenesis and function of melanosomes". Journal of Proteome Research. 5 (11): 3135–44. doi:10.1021/pr060363j. PMID 17081065. 
  • Lippert U, Diao D, Barak NN, Ferrari DM (Apr 2007). "Conserved structural and functional properties of D-domain containing redox-active and -inactive protein disulfide isomerase-related protein chaperones". The Journal of Biological Chemistry. 282 (15): 11213–20. doi:10.1074/jbc.M604440200. PMID 17296603.